Automatic expansion valves are used on some room air conditioners instead of the capillary tubes to control the flow of refrigerant into the evaporator. These…
Category: Room Air Conditioners
Whenever a shortage of refrigerant is suspected, this condition can be confirmed by identifying the source of leakage. A leak-test operation can be performed with…
With normal evaporator loading and average outdoor temperatures, if proper cooling is being accomplished, the compressor motor will draw the approximate amperage shown on the…
Under average operating conditions of outdoor and indoor temperatures, all evaporator return bends should be cold and at the same approximate temperature. On most models,…
When a unit operates but does not have its normal cooling capacity, the refrigerant system should be checked. Check for some obvious symptom (such as…
The compressor motor is a capacitor-type, split-phase motor that has two windings. The starting winding has the capacitor in series with it to give great…
This section lists the procedure and steps necessary to dismantle window air conditioners. The procedure can be used in its entirety or in part, according…
Room-air-conditioner servicing is similar to refrigerator servicing. An air conditioner is a refrigerant system that removes heat from a room. (In a refrigerator, the heat…
The unit control switch may be located on top of the cabinet or on one of the sides, depending upon the particular design. The control…
The thermostat (or temperature control) stops and starts the compressor in response to room temperature requirements. Each thermostat has a charged power element containing either…